Leyte Gulf.
There are several ways "biggest" can be interpreted. Please the see the Wikipedia Link below for a more complete discussion of "biggest naval battle".
Also, if you meant "most important", please use that wording in a different question.
The biggest naval battle in history was "Leyte Gulf" in October 1944. This was an allied victory.
The first naval battle in history between aircraft carriers was the battle of the Coral Sea in 1942.
Largest naval battle in history.
Largest naval battle in history.
The Battle of Savo Island.
This was the Battle of Jutland
Leyte Gulf.
The Naval Battle at Penobscot.
The largest naval battle in history.
The retaking of the Philippines happened when the Japanese navy confronted the Allies at the Battle of Leyte Gulf; the largest naval battle in history.
The Code is 15486fkl45
George Howard King has written: 'The Gibraltar of the West Indies' -- subject(s): History, History, Naval, Naval History, Saint Kitts, Battle of, 1782